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DA chip of Sony MD desks

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phamcu

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JA22ES: CXD8735N + CXA8042AS

JA20ES: CXD8735N + CXA8042AS

JB930: CXD8735N + CXA8042AS

JB920: CXD8767N + CXA8042AS

JA333ES: CXD9556AQ + CXA8042AS

JB940: CXD9556AQ

JA555ES: CXD8762Q + CXD9521Q + CXA8042AS = the same Sony CDP XA555ES

JA33ES: CXD8762Q + CXD8594Q + CXA8042AS

JA30ES: CXD8679Q + CXD8594Q + CXA8042AS

JE700: CXD8607N + CXA8055M

JE520: CXD8607N

JE770: AK4524

JE470: AK4524

JB730: AK4524

W1: 2 AK4321

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JA22ES: CXD8735N + CXA8042AS

JA20ES: CXD8735N + CXA8042AS

JB930: CXD8735N + CXA8042AS

JB920: CXD8767N + CXA8042AS

JA333ES: CXD9556AQ + CXA8042AS

JB940: CXD9556AQ

JA555ES: CXD8762Q + CXD9521Q + CXA8042AS = the same Sony CPD XA555ES

JA33ES: CXD8762Q + CXD8594Q + CXA8042AS

JA30ES: CXD8679Q + CXD8594Q + CXA8042AS

JE700: CXD8607N + CXA8055M

JE520: CXD8607N

JE770: AK4524

JE470: AK4524

JB730: AK4524

W1: AK4321

Thank you Pham Cu... But it is better to recall the members that your are the famous electronic ingeneer living in HCM city, Vietnam, who repair and sell minidisc units, blanks, and... what I will myself discover the next week when you will receive me in your home. My camera is already ready !

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I add welcome to you, Pham. I too went through the DACs and so on (listing them, mainly for my private use) but you are even better organised. I wonder what you think about optical out and the input DAC's of AV amplifiers (instead of relying on expensive DAC in MD)? I am very happy with Onkyo TX-SR605 working with TOSlink input from MD.

I will have some questions in due course, but here is one for now - do you know how to obtain a HiMD alignment disk (1GB disk)?

Thanks

Stephen

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I add welcome to you, Pham. I too went through the DACs and so on (listing them, mainly for my private use) but you are even better organised. I wonder what you think about optical out and the input DAC's of AV amplifiers (instead of relying on expensive DAC in MD)? I am very happy with Onkyo TX-SR605 working with TOSlink input from MD.

I will have some questions in due course, but here is one for now - do you know how to obtain a HiMD alignment disk (1GB disk)?

Thanks

Stephen

For sure, Pham Cu will is a rare pearl, even in this forum. For once we have one member who repair MDs (with an electronic ingeener experience) AND love it ! He has the answers I have ever wanted to know about vietnam audio electronic spare parts market (not only MD but also CD, ampli...). You have Jim in england, I have Pham Cu in Vietnam tongue.gif.

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Except that Jim is a loooong way away from here. The good news about England is that it seems to be the second best supply of all things MD in the world (after Japan). Jim certainly has many many MD lasers on hand to fix units with.

I would be interested in hearing Pham's opinion whether I should be getting a 110->100 volt converter, and what the long term prognosis is for the one unit I have which is currently being run on 117V when it should be 100.

BTW I saw today in Ebay UK, the MDS-W1.

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I would be interested in hearing Pham's opinion whether I should be getting a 110->100 volt converter, and what the long term prognosis is for the one unit I have which is currently being run on 117V when it should be 100.

I hope you will get an answer soon (have in mind he is not fluent in english, that he have to DISCOVER that you have a question first...

BTW I saw today in Ebay UK, the MDS-W1.

If it is this onehttp://cgi.ebay.co.u...=item1c1d28253f

I think the guy is wrong when he said "As well as producing faultless copies of Minidiscs by internal copying". If I remember W1 transfer faultless tracks from a MD to the other one but don't make a copy. It is perhaps usefull when you want to reorganise your MDs library tracks between several MDs or if your album cover fit better in another particular MD design. Do you remember those ones : http://www.audiotstation.com/forum/showthread.php?t=33127 , http://forums.sonyinsider.com/topic/22354-glossy-minidiscs-labeling-made-easy-finally/ and http://www.swharden.com/blog/how-to-create-your-own-custom-minidisc-labels/ and http://gadinsetboutsdeficelles.blogspot.com/2008/02/playlist-par-charles-berbrian-soif-de.html ... clapping.gif

To make a faultless copy, as I know, only professional decks like two MDS-B5 can do it. Maybe not ??? Could be interesting if a electronic ingeener could hack some decks...

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Just search posts by Philippeb and you will see that the claims are correct.

I confirm. The W1 does perfect track or disc copies in the ATRAC domain. A track move between two discs is actually a track copy (to destination) followed by a track erase (from source). As the final track erase is not immediately written to TOC, it can be undone in service mode, restoring the source track.

(copy; erase; undo erase) == copy

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I confirm. The W1 does perfect track or disc copies in the ATRAC domain. A track move between two discs is actually a track copy (to destination) followed by a track erase (from source). As the final track erase is not immediately written to TOC, it can be undone in service mode, restoring the source track.

(copy; erase; undo erase) == copy

What do you mean 'in the service mode', do you need to enter the service mode AFTER the transfer - at this moment - or the W1 propose himself to undo erase after making a service mode modification ? I downloaded the service manual on minidisc.org equipment browser but did not found yet this trick....

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What do you mean 'in the service mode', do you need to enter the service mode AFTER the transfer - at this moment - or the W1 propose himself to undo erase after making a service mode modification ? I downloaded the service manual on minidisc.org equipment browser but did not found yet this trick....

1. Wait for the transfer to finish

2. Eject the destination disc (TOC will be written)

3. Enter service mode

4. Eject the source disc (TOC will _not_ be written)

5. Exit service mode

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1. Wait for the transfer to finish

2. Eject the destination disc (TOC will be written)

3. Enter service mode

4. Eject the source disc (TOC will _not_ be written)

5. Exit service mode

So it is a trick moil.gif... Reading the service manual, does that mean (page 2)

3. Enter service mode = 1. With the power ON, press the 0 (Deck button while pressing the OUTPUT and CLEAR (Deck A) buttons together. + 2. Rotate the AMS knob and when "(Service)" is displayed, press the YES button.

4. Eject the source disc (TOC will _not_ be written)

5. Exit service mode

= 9. To exit the test mode, press the MD SYNC button. The unit sets into the STANDBY state, and the test mode ends.

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I do a simpler way. Deks A replaced by a lens down the recording and use it as a player. After the "move" it can not delete the original disk and release the disc. But then I have a feature "MD sync" to 4x speed..

That is simpler AFTER hacking the machinelaugh.gif...

Maybe Pham Cu one day will transform our old Sony units into Hi-MD units !

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